Gear-drive for three-high rolling-mills.



.T. KENNEDY.

GEAR DRIVE FOR THREE-HIGH ROLLING MILLS.

APPLICATION FILED DEC. 31, 1912.

1,1 12,218. Patented Sept.29,1914;

2 SHEETS-"SHEET 1.

WITNESSES INVENTOR WWW J. KENNEDY. GEAR DRIVE FOR THREE-HIGH ROLLINGMILLS.

AlPLIOATION FILED DEC. 31, 1912.

Patented Sept. 29, 1914.

2 SHEETSr-SHBET 2.

JULIAN KENNEDY, OF .PITTSBURGH, PENNSYLVANIA.

GEAR-DRIVE FOR THREE-HIGH ROLLING-MILLS.

Specification of Letters Patent.

Patented Sept. 29, 1914.

Application filed December 31, 1912. Serial No. 739,559.

To all whom it may concern:

Be it known that I, JULIAN KENNEDY, a citizen of the United States, andresident of Pittsburgh, in the county of Allegheny and State ofPennsylvania, have invented a new and useful Impr vement in Gear- Drivesfor Three-High Rolling-Mills, of which the followin is ful1,,clear,- andexact description, re eren being had to the accompanying drawings,forming part of this specification, in which,-

Figure 1 is a view, largely conventional, and showinga portion of anolling mill partly in elevation, and partly in vertical section; Fig. 2is a vertical section tlhrough the driving gear and the housingtherefor; Fig. 3

is a vertical section on the line TIL-III of Fig. 2; and Fig. 4 is adetail view of a portion of the driving shaft.

My invention has relation to gear drives for three-high ro'lling miills;and is denections and couplings for the rolls 2 and 4.

signed to provide a drive in which ,the

driving gears for the mill rolls may be of larger diameters than hasbeen possible heretofore.

- Referring to the accompanying drawings, the numeral'2 designates-thetop roll of a three-high mill, 3 the intermediate roll, and 4 the lowerroll.

5 and .6 designate the usual driving con- 7 and 8 designate two gearwheels for driving the rolls 2 and 4 respectively; These gear wheels aremade of relatively large diameters, and are placedin'difi'erent verticalplanes so that their peripheral portions may overlap.

9 designates the driving shaft carrying the two pinions 10 and 11, whichmesh respectively with the gear wheels 7 and 8. This shaft or spindle isjournaled to one side of the vertical centers of the gear wheels 7 and8, as shown in Fi 2.

12 designates a suitable housmg gears, and in which their spindles arejournale The gears 7 and 8, to ether with the pinions 10 and 11, are preerably, although not-necessarily, provided with double-heli-- cal teeth.

The advantages ofmy invention will be apparent to those skilled in theart, since it provides a very simple gear drive for three-high, mills,in which driving gears of maximum diameter may be employed, owing forthe to their overlapping arrangement. 1 The driving motor can bedirectly coupled orshaft having pinion gears meshipg with the toothedwheels within the gear housing, sub-. stantially as described.

2. The combination with a three-high rolling mill, of a drive therefor,said drive comprising a supplemental housing se arated from the millhousing, two horizonta shafts journaled in the supplemental housing oneabove the other and connected respectively to the top and bottom rollsof the mill, a gear wheel secured to each of said shafts, the two wheelsbeing in closely adjacent overlapping relation to each other, and adriving shaft also journaled in said supplemental housing and having apinion which meshes with each of said gear Wheels; substantially asdescribed.

3; The combination with a three-high rolling mill, of a drive therefor,said drive comprising a supplemental housing separated from the millhousing, two horizontal shafts journaled in the supplemental housing oneabove the other and connected respectively to the top and bottom rollsof the mill, a gear wheel secured to each of said shafts Within thesupplemental housing, the two wheels being in closely adjacentoverlapping relation to each. other, and a driving shaft or spindle alsojournaled 1n said supplemental housing and having a pinion which mesheswith each of said gear wheels, said gear wheels being separated latorally from each other a distance less than the width of the housing forthe mill rolls; substantially as described.

In. testimony whereof, I have hereunto set my hand.

JULIAN KENNEDY. Witnesses:

R. A. BALnnnsoN, Gso. H. FARM-arse.

00p! of this patent my be obtained for five cents each, by addressing;the "Commissioner of Patents,

Washington, I). 0.

